QuestionReportMathematics Question on permutations and combinationsWhat is the value of nCn^nC_nnCn ?A0B∞\infty∞CrD1Answer1ExplanationSolutionnCn=n!n!(n−n)!=n!n!0!^{n}C_{n} = \frac{n!}{n!\left(n-n\right)!} = \frac{n!}{n! 0!}nCn=n!(n−n)!n!=n!0!n! =n!n!=1= \frac{n!}{n!} = 1=n!n!=1
